JP4504760B2 - Electronics - Google Patents

Description

  The present invention relates to an electronic device that is used by being placed on a placement surface.

  In many electronic devices such as personal computers (hereinafter referred to as personal computers), electronic components incorporated in the housing generate heat. A fan is provided to send out the outside toward the outside of the housing (see, for example, Patent Documents 1 and 2). In both Patent Document 1 and Patent Document 2, a main body housing in which an electronic component such as a CPU (Central Processing Unit) is incorporated and a display housing in which a liquid crystal display panel is provided are connected to be openable and closable. A laptop computer is shown. This notebook personal computer is used in a state where the main body casing is placed on the mounting surface and the display casing is opened until it is slightly tilted to the rear side opposite to the user side which is the front side. Patent Document 1 shows a fan that sends out air in a main body casing and two exhaust surfaces that exhaust air sent by the fan. One of the two exhaust surfaces is a surface that exhausts the sent air obliquely upward and toward the user. The other exhaust surface is a surface facing in the horizontal direction. On the other hand, Patent Document 2 shows an exhaust surface that faces obliquely upward and rearward.

  However, in the notebook personal computer described in Patent Document 1, the wind from the exhaust surface exhausted toward the user hits the user, impairing a comfortable use environment. Further, the wind that comes out from the exhaust surface facing in the horizontal direction hits the mounting surface, and a wind noise is generated, which also impedes a comfortable use environment. Further, in the notebook computer described in Patent Document 2, the wind emitted from the exhaust surface facing the rear side not only hits the display housing opened until it slightly falls to the rear side, but also the notebook computer is placed. Since the place often has a wall behind the laptop computer on which it is placed, the wall also hits the wall, and wind hits both of them to generate an unpleasant wind noise for the user.

  Wind noise is also generated when the flow velocity of air sent toward the exhaust port increases when passing through the exhaust port.

Furthermore, if a sound generated inside the main body casing, such as a sound driven by a fan, is transmitted to the user, this also becomes a factor that hinders the use environment.
Japanese Patent Laid-Open No. 4-48693 (FIG. 5) JP-A-4-284519 (FIG. 5)

  An object of the present invention is to solve the above problems and to provide an electronic device that can be used comfortably by a user.

The first electronic device of the present invention that solves the above object is an electronic device that is used by being placed on a placement surface.
A housing having a built-in electronic component, a bottom surface that is placed on the mounting surface during use, and a front surface that faces the user side during use and that stands from the bottom surface and defines a front end;
A fan that is arranged inside the case and sends out air inside the case toward the outside of the case;
The housing has an exhaust surface that is obliquely upward and sideward for exhausting air sent by the fan.

Moreover, the second electronic device of the present invention that solves the above object is an electronic device that is used by being placed on a placement surface.
A housing having a built-in electronic component, a bottom surface that is placed on the mounting surface during use, and a front surface that faces the user side during use and that stands from the bottom surface and defines a front end;
A fan that is arranged inside the case and sends out air inside the case toward the outside of the case;
The casing has a side-facing exhaust port that exhausts air sent by the fan, and the air sent by the fan is ventilated obliquely upward toward the exhaust port inside the casing. It is characterized by having a duct to perform.

  According to these electronic devices of the present invention, since the air exhausted from the exhaust surface is exhausted obliquely upward and sideward, it does not hit the mounting surface described above, but behind the temporarily mounted electronic device Even if there is a wall on the back or a housing that is open until it falls down slightly on the back side, it will not hit them, and wind noise that is unpleasant for the user can be prevented. Further, the exhausted wind does not hit the user, and the user can use the electronic device comfortably.

  Here, it is preferable that the exhaust surface is disposed above an intermediate position in the vertical direction of the casing.

  By doing so, it is possible to more reliably prevent the wind exhausted from the exhaust surface from hitting the placement surface.

  It is also preferable that the bottom surface of the duct is composed of an upper surface of a heat transfer member that conducts heat from the electronic component and rises obliquely in a direction approaching the exhaust port.

  The heat of the electronic component is efficiently radiated by the heat transfer member.

  Furthermore, it is more preferable that the upper surface of the duct has an inclined portion that is inclined so as to be separated from the bottom surface as it approaches the exhaust port.

  If the upper surface of the duct is horizontal with respect to the duct bottom surface that has risen diagonally, the closer the exhaust port is, the narrower the duct becomes, and the flow velocity of air passing through the duct increases and the air passing through the exhaust port Wind noise may occur, but by providing the inclined portion on the upper surface of the duct, the air passing through the portion of the duct provided with the inclined portion has a reduced flow velocity, and wind noise is generated at the outlet. Is prevented.

  Furthermore, it is more preferable that the duct is provided with a plurality of fins erected by forming an air flow path between the heat transfer member and the inside of the duct.

  Heat dissipation is further promoted by the plurality of fins.

A third electronic device of the present invention that solves the above object is an electronic device that is used by being placed on a placement surface.
A housing having a built-in electronic component, a bottom surface that is placed on the mounting surface during use, and a front surface that faces the user side during use and that stands from the bottom surface and defines a front end;
A fan that is arranged inside the case and sends out air inside the case toward the outside of the case;
The housing has an exhaust port for exhausting air sent by the fan, and the housing is erected in an opposite direction to ventilate the air sent by the fan toward the exhaust port. A duct having a pair of standing walls is deployed,
The pair of upright walls of the duct have widened portions that are spaced apart from each other as they approach the exhaust port.

  According to the third electronic device of the present invention, since the flow velocity of the air passing through the exhaust port is dropped by the widened portion, the generation of wind noise unpleasant for the user is prevented.

A fourth electronic device of the present invention that solves the above object is an electronic device that is used by being placed on a placement surface.
Built-in electronic components, placed on the mounting surface during use, and a bottom surface with an opening through which sound generated inside leaks to the outside, and a front surface that faces the user side during use and defines the front end from the bottom surface A housing having
And a sound insulation member for preventing sound leaked through the opening from being sandwiched between the bottom surface and the mounting surface on which the bottom surface is placed, and leaking forward along the bottom surface.

  The opening here refers to a gap formed by a fitting structure such as a fan inlet provided on the bottom surface for sending the air inside the casing to the outside of the casing, or a removable cover member, etc. Any size or shape is acceptable.

  According to the fourth electronic device of the present invention, the sound generated inside the housing is prevented from being transmitted to the user in front, and the user can comfortably use the electronic device.

  Here, it is preferable that the sound insulation member covers the entire bottom surface because sound insulation is improved.

Further, the sound insulating member may be a foam material that is crushed recoverably by being sandwiched between the bottom surface and the mounting surface on which the bottom surface is mounted, or
The sound insulation processing may be performed by introducing a sound wave from the outside of the sound insulation member and proceeding inside the sound insulation member.

  That is, if the sound insulating member is the foamed material, it acts as a sound absorber, and if it performs a silencing process, it acts as a silencer.

  ADVANTAGE OF THE INVENTION According to this invention, the electronic device which a user can use comfortably can be provided.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a diagram showing a notebook personal computer which is an embodiment of the electronic apparatus of the present invention.

  A notebook personal computer (notebook personal computer) 1 shown in FIG. 1 includes a main body housing 10 in which an electronic component such as a CPU (Central Processing Unit) 11 is incorporated, and a display housing 20 in which a liquid crystal display panel 21 is provided. Are connected to each other so as to be able to be opened and closed, and when used, the main body housing 10 is placed on the mounting surface, and the display housing 20 is slightly placed on the back side opposite to the user side which is the front side. Use in an open state until it falls. FIG. 1 shows a state in which the notebook computer 1 is placed on a desk 91 and the display housing 20 is opened. In the figure, the right side is the front side (user side), and the left side is the back side. Become. When the display housing 20 is opened, the liquid crystal display panel 21 faces the user side. The main body housing 10 has a flat shape having a bottom surface 101 placed on the placement surface and a front surface 102 facing the user side during use and standing from the bottom surface 101 and defining a front end. The 91 side is the lower side. In the main body housing 10, a keyboard 121 and a touch pad 122 are mounted on an upper surface 103 opposite to the bottom surface 101. The user can operate the keyboard 121 and the touch pad 122 by opening the display housing 20. Here, a wall 92 is shown behind the desk 91.

  An exhaust surface 130 is provided on the side of the main body housing 10 of the notebook computer 1 shown in FIG. A fan is disposed inside the main body casing 10. The air inside the main body casing is sent out by the fan 15 toward the outside of the main body casing.

  FIG. 2 is a diagram showing a fan built in the main body housing of the notebook computer shown in FIG.

  The fan 15 shown in FIG. 2 is a flat sirocco fan and has a circular suction port 151. The fan 15 is disposed in the main body housing at a position spaced upward from the bottom surface 101 of the main body housing 10 shown in FIG. 1 so that the suction port 151 faces the bottom surface 101. The discharge port 152 of the fan 15 disposed in the main body housing faces the exhaust surface 130 shown in FIG. In the fan 15 shown in FIG. 2, the blade 153 rotates to suck the air on the front side of the paper, and discharge the air sucked upward as shown by the arrow.

  Further, a duct 16 connected to the exhaust surface 130 is connected to the discharge port 152 shown in FIG. The size of the exhaust surface 130 and the size of the duct opening connected to the exhaust surface 130 are the same. Further, a heat sink 161 is also provided inside the main body housing 10. The heat sink 161 is in contact with the plate-like heat transfer portion 1611 that conducts heat from electronic components such as the CPU 11 built in the main body housing 10 and the heat transfer portion 1611, and forms an air flow path between them. A plurality of fins 1612 are provided upright. The bottom surface of the duct is formed by the upper surface of the heat transfer portion 1611, and the plurality of fins 1612 are erected inside the duct. Air discharged from the discharge port 152 of the fan 15 passes between these fins 1612 and reaches the exhaust surface 130 shown in FIG. The heat generated by the CPU 11 and the like is dissipated by the heat sink 161 shown in FIG. 2, and air passes between the fins 1612, so that the cooling effect is enhanced.

  FIG. 3 is an enlarged view showing a side portion provided with an exhaust surface of the main body of the notebook computer shown in FIG.

  The exhaust surface 130 shown in FIG. 3 exhausts the air sent by the fan 15 shown in FIG. 2, and faces diagonally upward and sideward. The exhaust surface 130 is placed on the main body casing 10 so that the side surface 104 standing from the side of the bottom surface 101 enters the keyboard 121 side with respect to the boundary line 105 between the upper surface 103 and the side surface 104. It is inclined by 15 ° with respect to a vertical line rising vertically from the surface. Therefore, the air sent by the fan 15 shown in FIG. 2 is exhausted diagonally upward and sideward, and does not hit the placement surface of the desk 2 shown in FIG. In addition, the exhaust surface 130 is disposed above the intermediate position in the vertical direction of the main body housing 10, and in the flat main body housing 10, the exhaust air may hit the mounting surface of the desk 2. It is prevented more effectively. Further, since the exhaust air is exhausted to the side, it does not hit the rear side wall 92 shown in FIG. 1 or the display housing 20 that is opened until it is slightly tilted to the rear side. Therefore, the generation of wind noise due to the exhaust air is prevented. Further, the exhaust air does not hit the user, and the user can comfortably use the notebook computer 1 of the present embodiment.

  FIG. 4 is a graph showing the result of 1/3 octave analysis of the noise of the notebook computer shown in FIG.

  The horizontal axis of the graph shown in FIG. 4 indicates the frequency (Hz), and the vertical axis indicates the sound pressure level (dB / 20.0 μPa).

  As will be described later, the main body housing 10 of the notebook computer 1 shown in FIG. 1 is placed on the desk 91 via the sound absorbing material 30, but here, the sound absorbing material 30 is removed and the main body housing is removed. The bottom surface 101 of 10 was placed directly on the desk 91, and the noise during use was measured according to JIS standard X7779. Moreover, the noise at the time of use was similarly measured about the notebook-type personal computer of the structure same as the structure of the notebook-type personal computer 1 shown in FIG. 1 except having turned the exhaust surface in the horizontal direction. In any measurement, an A-characteristic filter was used for frequency analysis.

  In the graph of FIG. 4, the solid line indicates the result of the notebook computer 1 having the exhaust surface inclined obliquely upward by being inclined by 15 ° with respect to the vertical line, and the dotted line is the notebook having the exhaust surface facing the horizontal direction. The result of the type personal computer is shown.

  The total value of the sound pressure level in the range where the 1/3 octave band center frequency is from 100 Hz to 10 kHz was 46.6 dB in the case of the notebook type personal computer having the exhaust surface oriented in the horizontal direction. The notebook personal computer 1 having the exhaust surface was 45.6 dB, and a noise reduction of 1.0 dB was confirmed. This noise reduction can be attributed to the prevention of wind noise caused by the exhaust wind.

  Next, the sound absorbing material 30 shown in FIG. 1 will be described in detail.

  A sound absorbing material 30 shown in FIG. 1 is a foam material fixed to the bottom surface 101 so as to cover the entire bottom surface of the main body housing 10 shown in FIG. As shown in FIG. 1, when the notebook computer 1 is placed on the placement surface, the sound absorbing material 30 is sandwiched between the bottom surface 101 and the placement surface of the main body housing 10 and crushed in a recoverable manner. The bottom surface of the main body housing 10 shown in FIG. 1 has a gap formed by a fitting structure of a cover member that is removable from the side. For this reason, sound generated inside the main body housing 10 from the gap (for example, the fan rotation sound shown in FIG. 2) leaks, but the leaked sound leaks forward along the bottom surface 101. It is prevented by the crushed sound absorbing material 30. Sound generated inside the main body housing 10 is also radiated from the exhaust surface 130, but the radiated sound is prevented from leaking forward along the bottom surface 101 by the crushed sound absorbing material 30. The For this reason, it is suppressed that the sound produced in the inside of the main body housing | casing 10 is transmitted to the user who is ahead, and the user can use an electronic device more comfortably.

  Here, the noise measurement material was measured at the position of the user by attaching a sound absorbing material to the entire bottom surface of a commercially available laptop computer having an opening on the bottom surface of the main body housing, and the result will be described. .

  FIG. 5 is a graph showing the result of 1/3 octave analysis of the noise of a commercially available notebook computer.

  The horizontal axis of the graph shown in FIG. 5 indicates the frequency (Hz), and the vertical axis indicates the sound pressure level (dB / 20.0 μPa).

  Here, two kinds of sponges, a 1.3 mm thick sponge and a 40.0 mm thick sponge, are prepared as sound absorbing materials. First, before attaching the sponge, the bottom surface of the main body casing is placed on a desk. The noise at the time of use was measured according to JIS standard X7779. Next, two types of sponges with different thicknesses are attached to the entire bottom surface of the main unit housing, and a notebook PC is placed on the mounting surface so that the sponge is sandwiched between the bottom surface and the mounting surface. The noise at the time was measured in the same way. In any measurement, an A-characteristic filter was used for frequency analysis.

  In the graph of FIG. 5, the solid line shows the result of the notebook computer with the 40.0 mm thick sponge, and the one-dot chain line shows the result of the notebook computer with the 1.3 mm thick sponge. The dotted line shows the result of the notebook computer without the sponge.

  The total value of sound pressure level in the range of 1/3 octave band center frequency from 100 Hz to 10 kHz was 45.8 dB in the notebook type personal computer without the sponge attached, whereas the sponge having the thickness of 1.3 mm It was 44.7 dB in the notebook type personal computer to which is attached, and a noise reduction of 1.1 dB was confirmed. In addition, the notebook type personal computer on which a sponge having a thickness of 40.0 mm was pasted was 43.8 dB, and a noise reduction of 2.0 dB was confirmed. It can be said that this noise reduction is due to sound insulation and sound absorption of the sound leaked from the opening and the sound emitted from the exhaust surface 130 by the sponge attached to the bottom surface.

  Subsequently, a modification of the sound absorbing material 30 shown in FIG. 1 will be described with reference to FIGS. 5 and 6. Note that members having the same functions as those described so far are described using the same reference numerals as those used so far (the same applies hereinafter).

  FIG. 6 is a diagram illustrating a bottom surface to which a band-shaped sound absorbing material is fixed.

  In the center of the bottom face 101 of the main body casing of the notebook computer 1 shown in FIG. 6, an air intake surface 140 that is connected to a suction port of a fan built in the main body casing is provided. Although not shown, rubber feet are provided at the four corners of the main body casing bottom surface 101. When the notebook type personal computer 1 shown in FIG. A gap is generated by the height of the rubber feet, and air outside the main body case is taken into the main body case from the intake surface 140, and is generated inside the main case case 10 from the intake surface 140. Sound leaks. Further, the sound generated inside the main body housing 10 is also radiated from the exhaust surface 130 and tends to leak forward through a gap formed between the placement surface and the main body housing bottom surface 101.

  The band-shaped sound absorbing material 30 shown in FIG. 6 is a foaming material extending in the width direction connecting both side portions of the main body housing 10 between the air intake surface 140 and the front end 106 (user side end) of the main body housing 10. It is. When the notebook personal computer 1 is placed on the placement surface, the band-shaped sound absorbing material 30 is also sandwiched between the bottom surface 101 and the placement surface of the main body housing 10 and crushed recoverably and leaked from the intake surface 140. Sound and sound emitted from the exhaust surface 130 are prevented from leaking forward along the bottom surface 101.

  FIG. 7 is a diagram illustrating a bottom surface to which a U-shaped sound absorbing material is fixed.

  7 has a gap 18 formed on the rear end side by a fitting structure of a cover member 17 that can be removed from the rear. Sound generated inside the main body housing 10 leaks from the gap 18 or is emitted from the exhaust surface 130.

  A U-shaped sound absorbing material 30 shown in FIG. 5 is fixed to the bottom surface 101 so as to surround the gap 18 on the rear end side from the front, and is a portion 31 extending in the front-rear direction on each side of the bottom surface 101. , 32 and a portion 33 extending in the width direction connecting these portions 31 and 32 on the front end side. When the notebook type personal computer 1 is placed on the placement surface, the U-shaped sound absorbing material 30 is also sandwiched between the bottom surface 101 and the placement surface of the main body housing 10 and crushed recoverably, and leaks from the gap 18. And the sound radiated from the exhaust surface 130 is prevented from leaking forward along the bottom surface 101.

  Next, the aspect which changed the sound-absorbing material 30 shown in FIG. 1 into the silencer is demonstrated using FIG.

  FIG. 8 is a perspective view showing the silencer.

  The silencer 40 shown in FIG. 8 is also fixed to the bottom surface 101 so as to cover the entire bottom surface of the main body housing 10, similarly to the sound absorbing material 30 shown in FIG. 1. The silencer 40 performs sound silencing processing by introducing sound waves from the outside and traveling inside the sound waves, and includes a casing 41 that defines the outside and the inside. The housing 41 has a sound wave introduction surface 411 for introducing sound waves from the outside into the inside. The sound wave introduction surface 411 is provided with a large number of holes 4111 connecting the outside and the inside. The silencer 40 shown in FIG. 7 is fixed to the bottom surface 101 of the main body housing 10 so that the sound wave introduction surface 411 faces the bottom surface 101. Therefore, the sound leaking from the opening of the bottom surface 101 passes through the hole 4111 provided in the sound wave introduction surface 411 of the silencer 40 and enters the inside of the silencer 40 to be silenced. Leaking to the front of the body 10 is prevented. Further, the sound radiated from the exhaust surface 130 is also sound-insulated by the silencer 40 and is prevented from leaking to the front of the main body housing 10.

  Subsequently, a second embodiment of the present invention will be described. Here, the description overlapping the description of the first embodiment is omitted, and the description will focus on the characteristic part.

  FIG. 9 is a perspective view showing the notebook personal computer according to the second embodiment of the present invention from the bottom surface side of the main body casing.

  A fan 15 and a duct 16 are also built in the main body housing 10 of the notebook computer 1 shown in FIG. The fan 15 and the duct 16 are arranged with a slight gap from the bottom surface 101 of the main body housing. FIG. 9 shows a substrate 19 on which electronic components such as the CPU 11 are mounted, and the heat transfer portion 161 of the heat sink is thermally connected to the CPU 11 that generates a lot of heat. This thermal connection may be direct or indirect. In FIG. 9, the left front side of the figure is the rear side of the main body housing 10, and the right back side is the front side. The rear surface 107 of the main body housing 10 is provided with an air inlet 14 connected to a suction port 151 of a fan 15 built in the main body housing 10. As indicated by the arrows in the figure, the air outside the main body casing is taken into the main body casing from the inlet 14, reaches the inlet 151 of the fan 15 along the bottom surface 101, and passes through the duct 16. To do. The duct 16 has a pair of standing walls 1601 that are erected facing each other. The duct 16 is connected to the exhaust port 13, and the air that has passed through the duct 16 is exhausted from the exhaust port 13. The exhaust port 13 shown in FIG. 9 is provided in the side part of the main body housing | casing 10, and faces the horizontal direction and the side. The size of the exhaust port 13 and the size of the duct opening connected to the exhaust port 13 are the same.

  FIG. 10 is a view showing the inside of the duct connected to the exhaust port of the main body housing shown in FIG. 9 from the standing wall side.

  In FIG. 10, as indicated by the arrows, the air taken in from the intake port 151 shown in FIG. 9 is sent from the right side to the left side by a fan (not shown) and exhausted from the exhaust port 13 shown at the left end of the figure. The The heat transfer portion 1611 extending to the left and right in the figure is plate-shaped, and gradually increases in thickness as it approaches the exhaust port 13. In other words, the heat transfer unit 1611 has an upper surface 1611 a that rises obliquely in a direction approaching the exhaust port 13. The bottom surface 1602 of the duct 16 shown in FIG. 10 is formed by the inclined upper surface 1611 a, and the air passing between the fins 1612 is sent obliquely upward toward the exhaust port 13. Therefore, the duct 16 shown in FIG. 10 ventilates the air sent by the fan obliquely upward toward the exhaust port 13, and the air exhausted from the exhaust port 13 is obliquely upward and sideward. Exhausted. As a result, the air exhausted from the exhaust port 13 shown in FIG. 10 is the same as the air exhausted from the exhaust surface 130 shown in FIG. 92, and it does not hit the display housing 20 opened until it is slightly tilted to the rear side, and the generation of wind noise due to exhaust air is prevented. Further, the exhaust air does not hit the user, and the user can comfortably use the notebook computer 1 of the present embodiment.

  Further, the upper surface 1603 of the duct 16 shown in FIG. 10 has an inclined portion 1604 that is inclined so as to be separated from the duct bottom surface 1601 as it approaches the exhaust port 13. If this upper surface 1603 is horizontal with respect to the duct bottom surface 1602 that has risen diagonally, the duct 16 becomes narrower as it approaches the exhaust port 13, and the flow velocity of the air passing through the duct 16 increases so that the exhaust port 13 Although wind noise may occur due to the passing air, by providing the inclined surface 1604 shown in FIG. 10 on the upper surface 1603 of the duct, the air passing through the portion of the duct 16 where the inclined portion 1604 is provided has a flow velocity. The occurrence of wind noise at the exhaust port 13 is prevented.

  FIG. 11 is a view showing the inside of the duct built in the main body housing shown in FIG. 9 from the upper surface side.

  Also in FIG. 11, as indicated by the arrows, the air taken in from the intake port 151 shown in FIG. 9 is sent from the right side to the left side in the drawing, passes through between the fins 1612, and the exhaust port 13 shown at the left end in the drawing. Exhausted from. FIG. 11 shows a pair of standing walls 1601 that the duct 16 has. The pair of standing walls 1601 have widened portions 1605 that are separated from each other as they approach the exhaust port 13. The air passing through the portion of the duct 16 shown in FIG. 11 where the widened portion 1605 is provided has a reduced flow velocity, and the generation of wind noise at the exhaust port 13 is also prevented here.

  If the thickness of the main body housing 10 is suppressed, the inclined portion 1604 shown in FIG. 10 is omitted, and the widened portion 1605 shown in FIG. 11 is provided while keeping the upper surface 1603 of the duct 16 horizontal. Good.

  In the laptop computer 1 described above, the occurrence of wind noise due to exhaust air is prevented and the transmission of sound leaking from the opening on the bottom surface to the user is reduced. Can be used. Further, the exhaust air does not hit the user, and the user does not feel uncomfortable.

  Note that although various embodiments of the present invention have been described using a notebook personal computer as an example of an electronic device, the present invention is not limited to a notebook personal computer and can be applied to various electronic devices such as ubiquitous products. .

  Hereinafter, various aspects of the present invention will be additionally described.

(Appendix 1)
In an electronic device that is used on a mounting surface,
A housing having a built-in electronic component, a bottom surface that is placed on the mounting surface during use, and a front surface that faces the user side during use and that stands from the bottom surface and defines a front end;
A fan that is arranged inside the housing and sends out air inside the housing toward the outside of the housing;
The electronic apparatus, wherein the casing has an exhaust surface that is obliquely upward and sideward for exhausting air sent by the fan.

(Appendix 2)
The electronic apparatus according to claim 1, wherein the exhaust surface is disposed above an intermediate position in the vertical direction of the casing.

(Appendix 3)
In an electronic device that is used on a mounting surface,
A housing having a built-in electronic component, a bottom surface that is placed on the mounting surface during use, and a front surface that faces the user side during use and that stands from the bottom surface and defines a front end;
A fan that is arranged inside the housing and sends out air inside the housing toward the outside of the housing;
The casing has a side-facing exhaust port that exhausts air sent by the fan, and the air sent by the fan is ventilated obliquely upward toward the exhaust port inside the casing. An electronic device characterized by having a duct to perform.

(Appendix 4)
4. The electronic apparatus according to appendix 3, wherein the bottom surface of the duct is composed of an upper surface of a heat transfer member that conducts heat from the electronic component and rises obliquely in a direction approaching the exhaust port.

(Appendix 5)
The electronic apparatus according to appendix 4, wherein the upper surface of the duct has an inclined portion that is inclined so as to be separated from the bottom surface as it approaches the exhaust port.

(Appendix 6)
The electronic device according to appendix 4, wherein the duct is provided with a plurality of fins erected by forming an air flow path between the heat transfer member and the inside of the duct.

(Appendix 7)
In an electronic device that is used on a mounting surface,
A housing having a built-in electronic component, a bottom surface that is placed on the mounting surface during use, and a front surface that faces the user side during use and that stands from the bottom surface and defines a front end;
A fan that is arranged inside the housing and sends out air inside the housing toward the outside of the housing;
The housing has an exhaust port for exhausting air sent by the fan, and the housing is erected oppositely to ventilate the air sent by the fan toward the exhaust port. A duct having a pair of standing walls is deployed,
The pair of upright walls of the duct has widened portions that are separated from each other as they approach the exhaust port.

(Appendix 8)
In an electronic device that is used on a mounting surface,
A bottom surface that has electronic parts and is placed on the mounting surface during use, and has an opening through which sound generated inside leaks to the outside, and a front surface that faces the user side during use and defines the front end from the bottom surface A housing having
An electronic device comprising: a sound insulating member that is sandwiched between the bottom surface and a mounting surface on which the bottom surface is mounted and prevents sound leaking from the opening from leaking forward along the bottom surface.

(Appendix 9)
9. The electronic device according to claim 8, wherein the sound insulating member is a foam material that is crushed recoverably by being sandwiched between the bottom surface and a mounting surface on which the bottom surface is mounted.

(Appendix 10)
9. The electronic apparatus according to appendix 8, wherein the sound insulation member performs a sound deadening process by introducing a sound wave from outside the sound insulation member and causing the sound wave to travel inside the sound insulation member.

(Appendix 11)
The electronic device according to appendix 8, wherein the sound insulating member covers the entire bottom surface.

1 is a diagram illustrating a notebook personal computer that is an embodiment of an electronic apparatus of the present invention. It is a figure which shows the fan incorporated in the main body housing | casing of the notebook-type personal computer shown in FIG. It is a figure which expands and shows the side part in which the exhaust surface was provided of the main body housing | casing of the notebook-type personal computer shown in FIG. It is a graph which shows the result of having conducted the 1/3 octave analysis of the noise of the notebook type personal computer shown in FIG. It is a graph which shows the result of having analyzed 1/3 octave of the noise of a commercially available notebook computer. It is a figure which shows the bottom face to which the strip | belt-shaped sound-absorbing material was fixed. It is a figure which shows the bottom face to which the U-shaped sound-absorbing material was fixed. It is a perspective view which shows a silencer. It is a perspective view which shows the notebook type personal computer of 2nd Embodiment of this invention from the bottom face side of a main body housing | casing. It is a figure which shows the inside of the duct connected with an exhaust port of the main body housing | casing shown in FIG. 9 from the standing wall side. It is a figure which shows the inside of the duct built in the main body housing | casing shown in FIG. 9 from an upper surface side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Notebook personal computer 10 Main body housing | casing 101 Bottom surface 102 Front surface 103 Upper surface 104 Side surface 106 Front end 11 CPU
DESCRIPTION OF SYMBOLS 13 Exhaust port 130 Exhaust surface 14 Inlet port 140 Intake surface 15 Fan 16 Duct 1601 Standing wall 1602 Bottom surface 1603 Upper surface 1604 Inclined portion 1605 Widened portion 161 Heat sink 1611 Heat transfer portion 1612 Fin 18 Gap 20 Display housing 30 Sound absorbing material 40 Silencer

Claims (3)

In an electronic device that is used on a mounting surface,
A housing having a built-in electronic component, a bottom surface that is placed on the mounting surface during use, and a front surface that faces the user side during use and that stands from the bottom surface and defines a front end;
A fan that is arranged inside the housing and sends out air inside the housing toward the outside of the housing;
The casing has a side-facing exhaust port that exhausts air sent by the fan, and the air sent by the fan is ventilated obliquely upward toward the exhaust port inside the casing. Having a duct to be
The electronic apparatus according to claim 1, wherein the duct bottom surface is composed of an upper surface of a heat transfer member that conducts heat from the electronic component and is inclined obliquely in a direction approaching the exhaust port . The electronic apparatus according to claim 1 , wherein the upper surface of the duct has an inclined portion that is inclined so as to be separated from the bottom surface as it approaches the exhaust port . 2. The electronic apparatus according to claim 1, wherein the duct is provided with a plurality of fins erected by forming air flow paths between the heat transfer member and the inside of the duct .

Images